What is a covered call?
Covered calls explained plainly: how they work, what you give up, how they fit the wheel, and what our replays say about the related trades.
How a covered call works
You own 100 shares and sell a call option against them. The buyer pays you a premium for the right to buy your shares at the strike before expiry. If the stock stays below the strike, the call expires and you keep the shares and the premium. If it rises above, your shares are called away at the strike.
The call is covered because the shares you own back the obligation. You cannot lose more on the call than you give up in upside.
What you give up
A covered call caps your gain at the strike plus the premium, while leaving you with almost all the downside of the shares. The premium cushions a small fall and does nothing in a large one. In a strong rally you sell the stock at the strike and watch the rest go by.
That shape is the same as a cash-secured put at the same strike and expiry. The guide comparing covered calls with cash-secured puts covers why the two are nearly interchangeable.
Where it fits
Covered calls are the second half of the wheel: sell a put, get assigned, then sell calls on the shares until they are called away. They also underlie covered-call income funds, which hold a stock index and sell calls on it.
We use such a fund as the benchmark for our own options book, because a passive covered-call fund is the honest alternative to running the trade yourself.
What our replays say
We have not replayed covered calls as a standalone strategy, so we do not quote a return for them. The closest measured trade is the short put at 25 delta, the mirror of a covered call, which earned about plus 0.4% to plus 0.5% a trade on collateral on QQQ and SPY from 2016 to 2026.
On the call side, selling a call credit spread on QQQ and SPY lost about 6.6% a trade on dollars at risk with a 50% win rate over 746 entries, because the decade was mostly a rising market. Selling calls against a rising index is paid to give up upside, and in a bull market the upside is what you give up.
Historical replays are not a forecast. Options can lose more than the premium collected. This is education, not a recommendation to trade anything.